Evaluating Error Propagation in Coupled Land–Atmosphere Models

Earth Interactions

BryanPijanowski¹ 

关键词: Land-use and land-cover change;    Regional climate models;    Error propagation;    Precipitation;    Soil moisture;    Latent heat flux;    Land surface temperature;   

DOI  :  10.1175/2011EI380.1

学科分类：地球科学(综合)

来源: American Geophysical Union

【 摘 要 】

AbstractThis study examines how land-use errors from the Land Transformation Model (LTM) propagate through to climate as simulated by the Regional Atmospheric Model System (RAMS). The authors conducted five simulations of regional climate over East Africa: one using observed land cover/land use (LULC) and four utilizing LTM-derived LULC. The study examined how quantifiable errors generated by the LTM impact typical land–climate variables: precipitation, land surface temperature, air temperature, soil moisture, and latent heat flux. Error propagation was not evident when domain averages for the land–climate variables of the yearlong simulation were examined. However, the authors found that spatial errors from the LTM propagate through in complex ways, temporally affecting the seasonal distributions of rainfall, surface temperature, soil moisture, and latent heat flux. In particular, rainy seasons exhibited greater precipitation in LTM-RAMS simulations than in the reference simulation and less precipitation...

【 授权许可】

Unknown